Archipelago » qemu

/* See if various MMX/SSE SSSE3 instructions give expected results */

#include <stdio.h>

#include <string.h>

#include <stdint.h>

int main(int argc, char *argv[]) {

        char hello[16];

        const char ehlo[8] = "EHLO    ";

        uint64_t mask = 0x8080800302020001;

        uint64_t a = 0x0000000000090007;

        uint64_t b = 0x0000000000000000;

        uint32_t c;

        uint16_t d;

        const char e[16] = "LLOaaaaaaaaaaaaa";

        const char f[16] = "aaaaaaaaaaaaaaHE";

        /* pshufb mm1/xmm1, mm2/xmm2 */

        asm volatile ("movq    (%0), %%mm0" : : "r" (ehlo) : "mm0", "mm1");

        asm volatile ("movq    %0, %%mm1" : : "m" (mask));

        asm volatile ("pshufb  %mm1, %mm0");

        asm volatile ("movq    %%mm0, %0" : "=m" (hello));

        printf("%s\n", hello);

        /* pshufb mm1/xmm1, m64/m128 */

        asm volatile ("movq    (%0), %%mm0" : : "r" (ehlo) : "mm0");

        asm volatile ("pshufb  %0, %%mm0" : : "m" (mask));

        asm volatile ("movq    %%mm0, %0" : "=m" (hello));

        printf("%s\n", hello);

        /* psubsw mm1/xmm1, m64/m128 */

        asm volatile ("movq    %0, %%mm0" : : "r" (a) : "mm0");

        asm volatile ("phsubsw %0, %%mm0" : : "m" (b));

        asm volatile ("movq    %%mm0, %0" : "=m" (a));

        printf("%i - %i = %i\n", 9, 7, -(int16_t) a);

        /* palignr mm1/xmm1, m64/m128, imm8 */

        asm volatile ("movdqa  (%0), %%xmm0" : : "r" (e) : "xmm0");

        asm volatile ("palignr $14, (%0), %%xmm0" : : "r" (f));

        asm volatile ("movdqa  %%xmm0, (%0)" : : "r" (hello));

        printf("%5.5s\n", hello);

#if 1 /* SSE4 */

        /* popcnt r64, r/m64 */

        asm volatile ("movq    $0x8421000010009c63, %%rax" : : : "rax");

        asm volatile ("popcnt  %%ax, %%dx" : : : "dx");

        asm volatile ("popcnt  %%eax, %%ecx" : : : "ecx");

        asm volatile ("popcnt  %rax, %rax");

        asm volatile ("movq    %%rax, %0" : "=m" (a));

        asm volatile ("movl    %%ecx, %0" : "=m" (c));

        asm volatile ("movw    %%dx, %0" : "=m" (d));

        printf("%i = %i\n%i = %i = %i\n", 13, (int) a, 9, c, d + 1);

#endif

        return 0;

}